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Process Equipment and Plant Design

Process Equipment and Plant Design
In a thin cylindrical shell, the hoop stress is __________ stress.

Radial
Compressive
Longitudinal
Circumferential tensile

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Process Equipment and Plant Design
Friction factor for turbulent flow in a new pipe is given by

f = 16/NRe
f = 0.22 NRe0.05
f = 25/NRe
f = 0.04/NRe0.16

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Process Equipment and Plant Design
The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always

< 1
Equal to the order of reaction
1
>1

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Process Equipment and Plant Design
The longitudinal stress induced in a thin walled cylinderical vessel under internal pressure is

pd/8t
pd/2t
pd/t
pd/4t

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Process Equipment and Plant Design
With increase in the number of shell passes, the value of FT

Increases
Remains same, only if the number of tube passes does not change
Decreases
Remains same

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Process Equipment and Plant Design
Wind load consideration in the design of a support can be neglected, when the vessel is

Tall but empty
Short (< 2 m) and housed indoor
None of these
Tall (say 30 metres), but is full of liquid

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